Simple Water Level Indicator With Buzzer Circuit Diagram. Only few parts like buzzer transistor 300k variable resistor and a 9v battery or power supply. However there are folks who just require an indication of the different levels of water in the tank rather than have an automatic shut off facility.
Only few parts like buzzer transistor 300k variable resistor and a 9v battery or power supply. The circuit is very simple and low cost using. Water level indicator with auto cut off circuit in this circuit we have used a relay instead of a buzzer as the tank will become full relay will be changing its state and will cut off the power.
We are going to control the water pup with this relay so you must use a power full relay because low power relay will be damaged as more impairs will.
For using the circuit attache the two wires or probes in the water tank at your desired level and. The water level indicator circuit diagram monitors the level of water in the tank and simultaneously switches on the water pump whenever the water level goes low in the water tank. When the two probes shown in this water level indicator circuit will detect water the buzzer will start producing sound. It detects the level of water and the buzzer produces sound when the water reaches the preset level or when the container gets full.
